Consolidated Statements Of Operations And Comprehensive Income (Loss) (Parenthetical) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) [Abstract]
Changes in Cumulative translation adjustment inclusive of divestiture of business reclassified to gain from sale	$ 374.2

Changes in Cumulative translation adjustment inclusive of divestiture of business reclassified to gain from sale

No definition available.

Name:	pnr_ChangesinCumulativetranslationadjustmentinclusiveofdivestitureofbusinessreclassifiedtogainfromsale
Namespace Prefix:	pnr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration